Brian begins to think he's not so smart when he takes the SAT'S for Meg and gets a low score, so Peter decides to show him the joys of being an idiot.
Did You Know?
plays the voice of "Lincoln Cabinet Member." McGill actually played a member of Lincoln's cabinet, Edwin Stanton, in Lincoln
(2012). See more
The story is confused and ultimately doesn't establish whether tumor made Brian stupid or not. Failing the SAT and getting down about it, and then hanging out with Peter and his enjoyable idiotic activities, made him look stupid but don't fit plausible together. The operation wouldn't have made him normal again, he could have to chose to go back to his old lifestyle if he wanted to (this makes his bitter, sarcastic comments about how Stewie ruined his fun new life by tricking him into having the tumor removed inconsistent with how he acts the rest of the time). See more
Oh okay, What's this? She's peanut buttering you up for something.
References Our Idiot Brother
Traditional, arranged by Janne Ericsson
(uncredited), Erkan Oban
(uncredited) and Pat Reiniz
Performed by Rednex See more